Alright folks I think I finally have something to contribute after all the help everyone here has given me. I was under the car installing my skip shift this afternoon, and I think I found the fix to the high pitched rattle some of us have experiences. The clamp where the exhaust manifold that is even with the transmission has some sort of a clip on it with a round disk wedged into. I tapped the exhaust with a screwdriver and it rattled. I stuck the screwdriver in the tab and got the disc out then hit the tab with a hammer a few times to knock it back to a tight position, then stuck the disc back in. After I got the skip shift installed, I drove it around the block and held it at 1k rpms which is the sweet spot for it to occur, and I never heard it. Hope this helps someone cause that rattle was driving me crazy..... I will know for sure when i get to the parking garage tomorrow. This was on the driver side, but I always heard the noise from what i thought was the passenger side.

My dual mode rattle was a piece of weld that broke off inside the muffler.
They found it and no more rattle

Well after I get in the parking garage tomorrow, I'll know if I fixed it or not, but i didn't hear it on my drive so I'm pretty sure the rattle is gone. I could pinpoint it to around the transmission area jut by listening to it, so I didn't think it was as far back as the mufflers. As for your issue, did they tell you which part it was? And how easy it was to get to?

It should be spot welded on. To slide the clamp off you pull the retaining clip up so it will slide back over the disc. Even if your clamp bolts come loose, the clamp will remain where it is, and the exhaust will not fall off the car.

It should be spot welded on. To slide the clamp off you pull the retaining clip up so it will slide back over the disc. Even if your clamp bolts come loose, the clamp will remain where it is, and the exhaust will not fall off the car.

Haha, well, its defiantly not welded and I took the disk out to fix it. For now, I'm going to leave it the way it is. No point is taking it in to get it fixed since id probably get it back with a new ding and a couple of scratches for good measure. Lol

It shouldn't have come off, and if it rattling around in there that is the cause of your problem??
If that clamp ever loosens, the exhaust will drop.
The clamp on the other side will help it from coming down all the way.

It shouldn't have come off, and if it rattling around in there that is the cause of your problem??
If that clamp ever loosens, the exhaust will drop.
The clamp on the other side will help it from coming down all the way.

I'm guessing its the problem. I only installed the skip shift, and bent that tab in. It didn't make the rattling noise on the test drive after the install. It has made the noise since the day I got it home. I've owned alota cars in 15 years, and never had a single one have its exhaust loosen on its own. I'm not going to worry about it to much. I got a local muffler shop that I will get to fix it if I ever feel the need to because we all know I would have to leave it all day to get two tiny welds done.

When you bent the tab in, it is probably holding the piece it tighter.
It may loosen up and start rattling again.
If it starts rattling again I'd take that piece back out and keep it just in case.
Good luck.

Are we talking about a sliiight rattle that happens at very low speed like when you're backing out of a parking spot, or just starting to take off slowly?
Because I've heard that every once in a while..

Are we talking about a sliiight rattle that happens at very low speed like when you're backing out of a parking spot, or just starting to take off slowly?
Because I've heard that every once in a while..

Are we talking about a sliiight rattle that happens at very low speed like when you're backing out of a parking spot, or just starting to take off slowly?
Because I've heard that every once in a while..

this is a bbk video they have about installing there long tubes but at about 55 secs into the video you can see the clamps that are the problem they show them taking them off a few seconds later. they have lots of shots of them in the video. the problem is the under the metal flange on them. under that is a guide pin or disk that should be welded onto the stock pipe that has fallen off. that is the rattle. take it out life is good.

It's awesome that I took my car to the dealership for this rattle and they told me it was my actuators on the npp opening up. I laughed and told them to give me my keys because my fuse is pulled and that is impossible. The tech said you can always take it up with gm customer service or go to another dealership. Thanks for the post. Saved me a headache of fighting with dealers.

yea i did not want to take mine to the dealer and deal with a tech myself for the same reason.

Quote:

Originally Posted by Dexter9522

It's awesome that I took my car to the dealership for this rattle and they told me it was my actuators on the npp opening up. I laughed and told them to give me my keys because my fuse is pulled and that is impossible. The tech said you can always take it up with gm customer service or go to another dealership. Thanks for the post. Saved me a headache of fighting with dealers.